Indelible transfer compound



Patented June 23, 1925. I

UNITED STATE PATENT OFFICE.

. HELENA. s. SADTLER, or SPRINGFIELD TOWNSHIP, MONTGOMERY COUNTY, PENN- sYLvAma.

INIJELIBLETBANSFER COMPOUND.

No Drawing.

To all whom it may concern:

Be it known that I, HELENA S. SADTLER,

a citizen of the United States, and a resident of Springfield Townshi in the county 6 of Montgomery and State Pennsylvania, have invented an Improvement in Indelible Transfer Compounds, of whichthe following is a specification.

In many cases it is desirable that the marking transferred from a sheet of paper or other like sheet, generally known as a pattern sheet, onto a textile fabric or the like shall be indelible, and a transfer compound of a character which when transferred onto a fabric or the like forms a permanent marking which will not be removed upon the washing of the said fabriehas been sought in the past by many investigators and inventors, but for one reason or another the efforts to produce such a compound have not met with success.

The present invention has for its object generally to provide a compound which is adapted to be printed upon. a sheet of paper or other suitable material either in the form .of letters, numerals, words, or designs, and

to be thereafter transferred from such sheet to a fabric or other like material and after transfer to remain permanently thereon as an indelible marking.

A further object of the invention is to provide an indelible transfer compound including a solid artificial resin, which is nonsaponifiable and preferably of a character such that it will not melt or fuse at the ordinary temperature of boiling water (100 eentigrade), whereby after such compound v has been printed u on a sheet ,of paper or the like and trans erred in known manner to a sheet of textile fabric or the like it becomes and constitutes a permanent marking therefor. which cannot be removed by the washing of the fabric with soap or other ordinary detergent.

' I shall not at this time undertake to refer to and point out all of the various objects and advantages of the invention but will proceed at once with a. detailed description thereof from which the many advantages and purposes of the invention will be pointed out or will be apparent therefrom.

In the carrying out of my invention I obtain a good quality of commercial indelible printers ink of which the kind employed by collar and shirt manufacturers in the mark- Application filed July 14, 1923. Serial No. 651,622.

ing of their productsmay be mentioned as types, and laundry inks and combine the same with a suitable quantity of an artificial resin which is non-saponifiable. These inks include a suitable carbon black, or may include any other suitable pigment of the desired color, combined wlth a carrier, such as thickened linseed oil or varnish. This compound, as is well known, is more or less viscous, the viscosity being obtained by sub: jecting the linseed oil, in case that oil should .be used, to slight warming or heating for a period of time. If a color other than black is desired some one of the known pigments of fast color, other than carbon, in a finely divided state may be employed.

The said resin should be non-saponifiable because if the transfer medium employed should be readily saponifiable it is found that after the goods, such as a textile fabric, have been marked therewith in the manner heretofore indicated and the material so marked Washed with soap or the like saponification takes place, the character of the marking compound is thereby changed and, it is found, may be largel removed from the fabric. This would a serious defect or objection in the case of falliries which are to be laundered at interva s.

It is preferable also that the resin employed in combination with the ink shall be of such character that it will not melt except at a temperature above that of the boiling point of water. However, I have obtained very good results by the employment of an artificial resin of the character hereinbefore indicated, the boiling point of which was less than that of the temperature of boiling water. It must be understood, therefore, that my invention is not limited to the use of a resin having a fusing or melting point above that of the boiling point of water, but such medium may be fusible or. may melt at a temperature considerably below that of the boiling point of water and on the other hand may be of a character to melt or fuse at a temperature considerably above that of the boiling point of water and still operate successfully and fairly satisfactorily.

As an example of a form or type of resin which may be used I may mention coumarone resin, with which I have achieved ex-' cellent results. For the most part the coumarone resin heretofore employed by me has been of a character such that it would fuse or melt at a temperature above that of the boiling point of water, but as already indicated I have obtained fairly satisfactory results by the use or employment of a grade of that material which fused or melted at a considerably lower temperature.

In the preparation of a compound embodying my invention the transfer medium, such as coumarone resin possessing the qualities and characteristics above indicatedi, is first melted or fused, after which the ink, also of the character above indicated and mentioned, is introduced into the molten mass. Preferably the ink is previously warmed or heated to a point suflicient to render it sufficiently fluid and mobile to pour readily. The ink and the transfer medium are employed in the proportions of one to two parts, respectively, by weight. After the transfer medium has been melted or fused the ink is poured into and thoroughly mixed with the same while in'ahot state.

Instead of employing ink as above described I may combine a suitable pigment, such as carbon black. yellow lakes, etc., directly with the transfer medium of the character above. indicated. In the preparation of the transfer compound in which the pigment is mixed directly with the couniarone resin the latter is melted and the pigment in finely powdered form and in the proper proportions is introduced into the molten mass and thoroughly intermixed and mingled therewith.

In the use of the compound after the same has been thoroughly mixed and intermingled in any of the ways above indicated, it 1s maintained at a tei'nperaturesuflicient to render the same. suflicie'ntly fluid to enable its application to a printing bloc-k, cylinder or the like having thereon the letters, symbols or designs which it is desired shall be placed upon the patternsheets. By bringing the printing block, cylinder or the like into contact with these pattern sheets the letters, designs, etc. are printed thereon and after having been so printed may be transferred to a sheet of textile material or other suitable material in known manner by the placing of the pattern sheet face down upon the object to which the letters. designs, etc. are to be applied, after which a hot iron is applied to the reverse side of the pattern sheet. The application of a hot iron. effects-fusion and transfer of the compound fromthe pattern sheet to the sheet of textile or other material.

I have also discovered that a compound embodying my'invention may be produced in powdered or finely granulated form and that when so produced it is applied to the pattern sheet'in a manner different from that hereinbefore described.

In case it is desired toreduce. the compound to a. powder before its application to the pattern sheet I employ the ingredients in different proportions than heretofore mentioned. The, indelible ink or printers ink and the transfer medium are employed in the proportions of one to three parts, respectively, by weight. The proper amount of th transfer medium is heated so as to melt or fuse the same and the ink is then introduced and thoroughly mixed therewith, having been first slightly warmed so as torender the same sufficiently fluid and mobile to flow readily into the molten medium. The com biued mass is then allowed to cool, and is then passed through a comminuting and grinding apparatus and thereby converted into a 'ranular or powdered state. Prefer-' ably the granulated material is passed through sieves in order to obtain the powder as fine as may be desired.

I u the application of the powdered transfer medium to the transfer sheets the letters, symbols or designs are printed on such sheets by means of an indelible or printers ink of the character above indicated and while the letters. symbols or designs as printed upon such sheets are still moist the powdered material is sprinkled thereove-r and a portion thereof adheres to the moist letters, symbols or designs. The material which does not adhere to these moist letters, symbols or designs is removed from the sheets, after which the sheets are passed underneath a flame which plays upon the sheets and upon the said letters, symbols or designs, whereby the powdered compound is melted or fused and coalesces and combines with the ink previously printed or placed thereon. The letters, symbols or de-' signs may thereafter be transferred from the transfer sheets to sheets of fabric or other material in the manner as hereinbefore de scribed.

I have discovered that by the employment of a transfer medium of the character indicated as an ingredient of a transfer compound the same is rendered indelible and may be employed as permanent markings for handkerchiefs, gloves, and wearing apparel of all kinds and that when such articles have been marked with a compound embodying my invention the markings remain thereon permanently and are not removed as the result of the laundering thereof. In fact, articles marked with a compound embodying my invention have with- I stood the severest tests and it has been found impractical or impossible to remove the markings without the employment of strongalkalies, etc.

The term pigment employed herein and carbon but also other color materials.

in the claims is intended to include not only v Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A transfer ink for producing perman- 5 cut or indelible markings on fabrics or the like, comprising'an artificial resin, which is non-saponifiable, andan ink which is in itself ,indelible.

2. A transfer ink for producing indelible g I markings on fabrics and the'Iike, comprising an artificial resin, which is non-saponi fiable and fuses aboutor above 100 centi' vgrade and an ink which is in itself indelible.

3. A transfer ink in powdered form for producing permanent or indelible markin s 15 on fabrics or the like comprisin an arti cial resin which is nonsa nifiaiile and an ink which is in itself inde ible.

4. A transfer ink in wdered form for producing indelible mar ings on fabrics or the like, comprising an artificial resin which is non-saponifiable and fuses about 100 centiade and an ink which is in itself indelible.

In:-testimony that I claim the foregoing as my invention, I have hereunto signed my 25 name this 12th day of July, 1923.

HELENA s. SADTLER. 

